Schott Ag

Schott Glas

Asahi Glass Company, Limited

Holger Köbrich

Bernd Schultheis

Dieter Jung

Clemens Ottermann

Ruth Effenberger

Rainer Solbach

Hans-Jürgen Hommes

Dirk Hertel

Klaus Michael Hammerl

Detlef Helmut Josef Rehorek

A developer unit having a toner reservoir and a toner application device. The toner application device applies toner to a developer and the developer can be brought into a planar contact with an OPC (photo conductor drum). In order to improve the transfer of toner in the contact area between the OPC and the developer, the developer has a developer strip that is placed, in the contact area, in some areas of the surface of the OPC.

Developer unit having a developer tape for toner transfer

An electrophotographic printing device including a toner-developer unit, a lighting device, a developer drum, a photoconductor, a transfer unit and an earthed charging device. The substrate to be printed is placed on a transport device and moved along the transfer unit and the toner image of the transfer unit is transmitted to the substrate. A clear, sharp and shadow-free printed image is obtained by arranging the substrate on a non-earthed, electrically conductive layer which is insulated relative to the earthed transport device by an insulator extending along the charging device that is located above the substrate and the measurement of substrate that is to be printed and that is oriented in the direction of transport. The charging device can be charged at a potential, exciting voltage U, of between 1 to 10 kV, more particularly 1.5 to 4 kV.

Electrophotographic printing device having non-grounded electrically conductive layer

The invention provides a process for producing an improved organic light-emitting diode () with a structured luminous area and a substrate (), which comprises the steps of:

Process for producing organic light-emitting diodes, and organic light-emitting diode

A process and cooking area for in-service measurement of temperature in at least one cooking zone of the cooking area with a glass ceramic plate is based on an empirically derived correlation between transmission of light through the glass ceramic plate in a wavelength range of a temperature that is typical of the respective glass ceramic material. The process includes irradiation of the glass ceramic plate in the cooking zone from the inside toward the outside with light in the wavelength range of 700-1500 nm, with the light being reflected at the outer surface of the glass ceramic plate and passing through the glass ceramic plate a second time. Detection of reflected light with a photocell, generates a photocurrent that corresponds to the transmission of the glass ceramic plate in the cooking zone. The temperature of the cooking zone is derived from the derived correlation between the transmission of light of the specified wavelength and the temperature of the glass ceramic plate.

Process and device for in-service measurement of temperature in at least

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Flörsheim, Germany

Holger Köbrich